<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>查找拐点</title>
    <script src="../dep/jquery.min.js"></script>
    <style>
        body {
            margin: 0;
            padding: 0;
        }

        #points, #points-break {
            position: absolute;
            left: 0;
            top: 0;
            width: 800px;
            height: 800px;
        }

        #points i,
        #points-break i {
            position: absolute;
            width: 1px;
            height: 1px;
            background: #eee;
        }

        #points-break i {
            background: #333;
        }

        #points-break i.break {
            width: 2px;
            height: 2px;
            background: red;
        }

        #points-break i.tangency {
            width: 4px;
            height: 4px;
            background: blue;
        }

        #points-break i.apex {
            width: 2px;
            height: 2px;
            background: cyan;
        }

        #points-break i.inflexion {
            width: 2px;
            height: 2px;
            background: green;
        }

        #points-break i[data-visited] {
            width: 3px;
            height: 3px;
            border-radius: 3px;
        }
    </style>
</head>
<body>
    <div id="points"></div>
    <div id="points-break"></div>

</body>
</html>
